A man in his 50s has been arrested on suspicion of the murder of Miriam Burns in Co Kerry.
Ms Burns, 75, was found dead at her home yesterday in Ardshanavooley in Killarney with unexplained injuries.
Gardaí opened a murder investigation after a post-mortem examination was carried out at University Hospital Kerry by State Pathologist Dr Margot Bolster.
The man arrested is currently being questioned at Killarney Garda Station.
Gardaí are appealing to anybody who was in the Ardshanavooley area between 5pm last Friday and 1pm yesterday to contact them on 064 6671160.
They are particularly keen to speak with anyone who noticed any activity that drew their attention.